CN112864512A - Lithium ion battery - Google Patents
Lithium ion battery Download PDFInfo
- Publication number
- CN112864512A CN112864512A CN201911183422.6A CN201911183422A CN112864512A CN 112864512 A CN112864512 A CN 112864512A CN 201911183422 A CN201911183422 A CN 201911183422A CN 112864512 A CN112864512 A CN 112864512A
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- CN
- China
- Prior art keywords
- plate
- pole
- lithium ion
- ion battery
- wing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 26
- 238000003825 pressing Methods 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 2
- -1 polyethylene terephthalate Polymers 0.000 claims description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 2
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 4
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The invention discloses a lithium ion battery, which comprises a shell, a battery cell, a bracket and a pole structure, wherein the shell is provided with a plurality of battery cells; the shell is internally provided with a chamber, the top of the shell is provided with an opening, and the opening is communicated with the chamber; the battery cell is arranged in the cavity, and the top of the battery cell is provided with a positive electrode lug and a negative electrode lug; the pole structure is arranged at the opening, and a positive pole and a negative pole of the pole structure are respectively connected with the positive pole lug and the negative pole lug; the support is mounted on the cell to provide support for the post structure, and the support is configured to limit the positive and negative tabs from contacting the housing. The lithium ion battery can limit the displacement of the battery core caused by vibration, and simultaneously can improve the safety performance.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to a lithium ion battery.
Background
Lithium ion batteries are widely used because of their advantages of high specific energy, light weight, fast charge and discharge rates, etc. The problem that the existing lithium ion battery is short-circuited or the shell is electrified easily occurs, and meanwhile, the internal battery core is easy to displace during vibration, so that potential safety hazards can be caused in the use process.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide a lithium ion battery which can limit the displacement of a battery core caused by vibration and can improve the safety performance.
In order to achieve the above object, the present invention provides a lithium ion battery, which includes a casing, a battery cell, a bracket and a pole structure; the shell is internally provided with a chamber, the top of the shell is provided with an opening, and the opening is communicated with the chamber; the battery cell is arranged in the cavity, and the top of the battery cell is provided with a positive electrode lug and a negative electrode lug; the pole structure is arranged at the opening, and a positive pole and a negative pole of the pole structure are respectively connected with the positive pole lug and the negative pole lug; the support is mounted on the cell to provide support for the post structure, and the support is configured to limit the positive and negative tabs from contacting the housing.
Optionally, the lithium ion battery includes an inner sleeve, the inner sleeve is disposed in the cavity, the battery cell is disposed in the inner sleeve, and the bracket is erected at the top of the inner sleeve; the top of the inner sleeve is provided with a through hole which can allow the positive pole column and the negative pole column to be connected with the positive pole lug and the negative pole lug respectively.
Optionally, the inner sleeve and/or the bracket are made of polyethylene glycol terephthalate.
Optionally, the shape of the inner sleeve is matched with the shape of the battery cell.
Optionally, the inner sleeve is of an integrally formed foldable plate-shaped structure, the inner sleeve includes a bottom plate, a first side plate, a second side plate, a first wing plate, a second wing plate, a third wing plate, a fourth wing plate, a first top plate and a second top plate, the bottom plate is of a rectangular structure, the first side plate and the second side plate are respectively connected to two long sides of the bottom plate, the first wing plate and the second wing plate are respectively connected to two side edges of the first side plate, the third wing plate and the fourth wing plate are respectively connected to two side edges of the second side plate, and one ends of the first side plate and the second side plate, which are far away from the bottom plate, are respectively connected to the first top plate and the second top plate; in a folded state, the first wing plate and the third wing plate, the second wing plate and the fourth wing plate, and the first top plate and the second top plate are respectively and correspondingly overlapped so that the inner sleeve is folded into a cuboid structure; wherein, the through holes are correspondingly arranged on the first top plate and the second top plate.
Optionally, the inner sleeve includes a first protection plate and a second protection plate respectively connected to two short sides of the bottom plate, and in the folded state, the first protection plate and the second protection plate enable the first wing plate and the third wing plate, and the second wing plate and the fourth wing plate to be correspondingly maintained in an overlapped state respectively.
Optionally, the pole structure includes a cover plate and two pressing blocks; the two pressing blocks are respectively installed at two ends of the cover plate through rivets to form the anode pole and the cathode pole.
Optionally, the pole structure includes a first insulating sheet, and the first insulating sheet is disposed between the cover plate and the pressing block.
Optionally, the pole structure includes a connecting piece, the connecting piece is connected with the pressing block through the rivet, the connecting piece is installed on the cover plate so that the cover plate is located between the connecting piece and the pressing block, and the two pressing blocks are respectively connected with the positive pole lug and the negative pole lug through the connecting piece.
Optionally, the pole structure includes a second insulating sheet, and the second insulating sheet is disposed between the connecting sheet and the cover plate.
According to the technical scheme, the support is arranged on the battery cell to support the pole structure, and the support is arranged to limit the positive pole lug and the negative pole lug to be in contact with the shell, so that vibration generated by the battery in operation can be absorbed by the support, the battery cell cannot be displaced, and the safety performance is improved.
Drawings
FIG. 1 is a front view of one embodiment of a lithium-ion battery of the present invention;
FIG. 2 is a schematic perspective view of an inner sleeve of a lithium ion battery of the present invention;
fig. 3 is a schematic view of the lithium ion battery of the present invention with the inner case expanded.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1 to 3, the lithium ion battery of the present invention includes a casing 1, a battery cell 2, a support 3, and a pole structure; a cavity is arranged in the shell 1, and an opening is arranged at the top of the shell 1 and communicated with the cavity; the battery cell 2 is arranged in the cavity, and the top of the battery cell 2 is provided with a positive electrode lug 4 and a negative electrode lug 5; the pole structure is arranged at the opening, and a positive pole and a negative pole of the pole structure are respectively connected with a positive pole lug 4 and a negative pole lug 5; a support 3 is mounted on the cell 2 to provide support to the pole structure, the support 3 being arranged to restrict the positive and negative pole tabs 4, 5 from contacting the housing 1.
In the invention, because the bracket 3 is mounted on the battery cell 2 to provide support for the pole structure, and the bracket 3 is configured to limit the positive pole tab 4 and the negative pole tab 5 from contacting the casing 1, the vibration generated during the operation of the battery can be absorbed by the bracket 3, so that the battery cell 2 is not displaced, and the safety performance is further improved.
In order to prevent the battery short circuit phenomenon caused by the contact between the battery core 2 and the shell 1, optionally, the lithium ion battery comprises an inner sleeve 6, the inner sleeve 6 is arranged in the cavity, the battery core 2 is arranged in the inner sleeve 6, and the support 3 is erected at the top of the inner sleeve 6; wherein, the top of the inner sleeve 6 is provided with a through hole 610 which can allow the anode pole and the cathode pole to be respectively connected with the anode tab 4 and the cathode tab 5. That is, the inner sleeve 6 isolates the battery cell 2 and the housing 1 from each other, thereby effectively avoiding the risk of short circuit of the battery.
In order to reduce the weight of the battery as much as possible while the inner sleeve 6 plays a role of isolating the electric core 2 from the shell 1, the material of the inner sleeve 6 is optionally polyethylene glycol terephthalate.
In order to reduce the weight of the battery as much as possible while the bracket 3 plays a role in absorbing vibration and providing support, the bracket 3 is made of polyethylene terephthalate.
It should be understood that the inner sleeve 6 may be formed in various shapes as long as it can accommodate the battery cell 2 and effectively isolate the battery cell 2 from the casing 1, and in one embodiment of the present invention, the shape of the inner sleeve 6 may be optionally adapted to the shape of the battery cell 2.
The electric core 2 is generally in a rectangular parallelepiped structure, and therefore, in the above embodiment, the inner sleeve 6 is also designed in a rectangular parallelepiped structure, and for the processing, manufacturing and assembling work, the inner sleeve 6 is optionally in an integrally formed foldable plate-shaped structure, which is efficient and convenient as soon as possible. In one embodiment of the present invention, the inner sleeve 6 includes a bottom plate 601, a first side plate 602, a second side plate 603, a first wing 604, a second wing 605, a third wing 606, a fourth wing 607, a first top plate 608 and a second top plate 609, wherein the bottom plate 601 is a rectangular structure, the first side plate 602 and the second side plate 603 are respectively connected to two long sides of the bottom plate 601, the first wing 604 and the second wing 605 are respectively connected to two side edges of the first side plate 602, the third wing 606 and the fourth wing 607 are respectively connected to two side edges of the second side plate 603, and ends of the first side plate 602 and the second side plate 603 far away from the bottom plate 601 are respectively connected to the first top plate 608 and the second top plate 609; in the folded state, the first wing plate 604 and the third wing plate 606, the second wing plate 605 and the fourth wing plate 607, and the first top plate 608 and the second top plate 609 are respectively and correspondingly overlapped to fold the inner sleeve 6 into a rectangular parallelepiped structure; the first top plate 608 and the second top plate 609 are respectively provided with a through hole 610. That is, the foldable plate-shaped structure having the above shape may be easily folded into a rectangular parallelepiped structure so as to be adapted to the shape of the battery cell 2.
In order to maintain the folded rectangular parallelepiped shape of the inner case 6, the inner case 6 may optionally include first and second protection plates 611 and 612 connected to two short sides of the bottom plate 601, respectively, and in the folded state, the first and second protection plates 611 and 612 may maintain the first and third wing plates 604 and 606, and the second and fourth wing plates 605 and 607 in the overlapped state, respectively. That is, after the inner case 6 is folded into the rectangular parallelepiped structure, the first and second protection plates 611 and 612 are folded to both sides of the rectangular parallelepiped structure, thereby preventing the wing panels from being opened.
The pole structure comprises a cover plate 7 and two pressing blocks 8; the two pressing blocks 8 are respectively installed at both ends of the cover plate 7 through rivets 12 to form a positive electrode pole and a negative electrode pole.
In the invention, two stainless steel pressing blocks 8 are respectively arranged at two ends of the cover plate 7 through rivets 12, and the pressing blocks 8 are made of stainless steel and have very thin thickness, so that the pole has very light weight, and the mass energy density of the battery is correspondingly increased.
In order to prevent the short circuit phenomenon caused by the direct contact between the cover plate 7 and the pressing block 8, optionally, the pole structure includes a first insulating sheet 9, and the first insulating sheet 9 is disposed between the cover plate 7 and the pressing block 8.
It should be understood that the first insulating sheet 9 may be installed between the pressing block 8 and the cover plate 7 in various ways, and in one embodiment of the present invention, optionally, the first insulating sheet 9 is provided with a first through hole through which the rivet 12 passes to install the first insulating sheet 9 between the cover plate 7 and the pressing block 8. In the above embodiment, the first insulating sheet 9 also contributes to further improving the firmness of the pole structure during the riveting process of the press block 8 and the cover plate 7.
In order to conveniently connect the positive pole and the negative pole to the tabs of the battery core, optionally, the pole structure includes a connecting sheet 10, the connecting sheet 10 is connected to the pressing blocks 8 through rivets 12, the connecting sheet 10 is installed on the cover plate 7 so that the cover plate 7 is located between the connecting sheet 10 and the pressing blocks 8, and the two pressing blocks 8 are respectively connected to the positive pole tab 4 and the negative pole tab 5 through the connecting sheet 10.
In order to prevent the connecting sheet 10 from directly contacting the cover plate 7 to cause a short circuit, optionally, the pole structure includes a second insulating sheet 11, and the second insulating sheet 11 is disposed between the connecting sheet 10 and the cover plate 7.
It should be understood that the second insulation sheet 11 can be installed between the connection sheet 10 and the cover plate 7 in various ways, and in an embodiment of the present invention, optionally, the second insulation sheet 11 is provided with a second through hole, and the rivet 12 penetrates through the second through hole to install the second insulation sheet 11 between the connection sheet 10 and the cover plate 7. In the above embodiment, the second insulation sheet 11 also contributes to further improving the firmness of the pole structure during the riveting of the connection sheet 10 and the cover plate 7.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications may be made to the technical solution of the invention, and in order to avoid unnecessary repetition, various possible combinations of the invention will not be described further. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. The lithium ion battery is characterized by comprising a shell (1), an electric core (2), a bracket (3) and a pole structure;
the shell (1) is internally provided with a chamber, the top of the shell (1) is provided with an opening, and the opening is communicated with the chamber;
the battery cell (2) is arranged in the cavity, and the top of the battery cell (2) is provided with a positive electrode lug (4) and a negative electrode lug (5);
the pole structure is arranged at the opening, and a positive pole and a negative pole of the pole structure are respectively connected with the positive pole lug (4) and the negative pole lug (5);
the support (3) is arranged on the battery cell (2) to provide support for the pole structure, and the support (3) is arranged to limit the positive pole lug (4) and the negative pole lug (5) to contact the shell (1).
2. The lithium ion battery according to claim 1, characterized in that the lithium ion battery comprises an inner sleeve (6), the inner sleeve (6) is arranged in the chamber, the cell (2) is arranged in the inner sleeve (6), and the bracket (3) is erected on top of the inner sleeve (6); the top of the inner sleeve (6) is provided with a through hole (610) which can allow the positive pole post and the negative pole post to be respectively connected with the positive pole lug (4) and the negative pole lug (5).
3. The lithium ion battery according to claim 2, characterized in that the material of the inner sleeve (6) and/or the bracket (3) is polyethylene terephthalate.
4. The lithium ion battery according to claim 2, characterized in that the shape of the inner sleeve (6) is adapted to the shape of the battery cell (2).
5. The lithium ion battery according to claim 4, wherein the inner housing (6) is an integrally formed foldable plate-shaped structure, the inner housing (6) comprises a bottom plate (601), a first side plate (602), a second side plate (603), a first wing plate (604), a second wing plate (605), a third wing plate (606), a fourth wing plate (607), a first top plate (608) and a second top plate (609), the bottom plate (601) is a rectangular structure, the first side plate (602) and the second side plate (603) are respectively connected to two long sides of the bottom plate (601), the first wing plate (604) and the second wing plate (605) are respectively connected to two sides of the first side plate (602), the third wing plate (606) and the fourth wing plate (607) are respectively connected to two sides of the second side plate (603), and ends of the first side plate (602) and the second side plate (603) far away from the bottom plate (601) are respectively connected to two sides of the first side plate (601) A top plate (608) and a second top plate (609); in a folded state, the first wing plate (604) and the third wing plate (606), the second wing plate (605) and the fourth wing plate (607), the first top plate (608) and the second top plate (609) are respectively and correspondingly overlapped to enable the inner sleeve (6) to be folded into a cuboid structure; wherein the first top plate (608) and the second top plate (609) are respectively provided with the through hole (610).
6. The lithium ion battery according to claim 4, wherein the inner housing (6) comprises a first protection plate (611) and a second protection plate (612) respectively connected to two short sides of the base plate (601), and in the folded state, the first protection plate (611) and the second protection plate (612) can respectively maintain the first wing plate (604) and the third wing plate (606), the second wing plate (605) and the fourth wing plate (607) in an overlapped state.
7. The lithium ion battery according to any of claims 1-6, characterized in that the pole structure comprises a cover plate (7) and two compacts (8); the two pressing blocks (8) are respectively installed at two ends of the cover plate (7) through rivets (12) to form the anode pole and the cathode pole.
8. The lithium ion battery according to claim 7, characterized in that the pole structure comprises a first insulating sheet (9), the first insulating sheet (9) being arranged between the cover plate (7) and the press block (8).
9. The lithium ion battery according to claim 7, characterized in that the pole structure comprises a connecting piece (10), the connecting piece (10) is connected with the pressing block (8) through the rivet (12), the connecting piece (10) is mounted on the cover plate (7) so that the cover plate (7) is located between the connecting piece (10) and the pressing block (8), and the two pressing blocks (8) are respectively connected with the positive pole tab (4) and the negative pole tab (5) through the connecting piece (10).
10. The lithium ion battery according to claim 9, characterized in that the pole structure comprises a second insulating sheet (11), the second insulating sheet (11) being arranged between the connection sheet (10) and the cover plate (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911183422.6A CN112864512A (en) | 2019-11-27 | 2019-11-27 | Lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911183422.6A CN112864512A (en) | 2019-11-27 | 2019-11-27 | Lithium ion battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112864512A true CN112864512A (en) | 2021-05-28 |
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ID=75984862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911183422.6A Pending CN112864512A (en) | 2019-11-27 | 2019-11-27 | Lithium ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112864512A (en) |
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2019
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| Date | Code | Title | Description |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 226200 No.306 Heping South Road, Huilong Town, Qidong City, Nantong City, Jiangsu Province Applicant after: Jiangsu haisida power supply Co.,Ltd. Address before: 226200 No.306 Heping South Road, Huilong Town, Qidong City, Nantong City, Jiangsu Province Applicant before: JIANGSU HIGHSTAR BATTERY MANUFACTURING Co.,Ltd. |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210528 |